Surface Discharge Plug ???

D

dave269

Member
what spark plug would you recc for a mod flathead with a large intake valve[1.33]. Will a std ND plug work if indexed properly or because of the large valve will I be limited to the surface discharge plug ? also what surface discharge plug would be recc ???
 
NGK BU8H

IN Denso, try the W27 FS.

Both are gapless plugs.

You can also cut part of the ground strap off and peen down the remaining ground strap so that you have a "side ground" plug. This way you will have a stronger arc, and it can be gapped the way you want too.


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Thanks and God bless,
Brian Carlson
Carlson Racing Engines
Vector Cuts
www.CarlsonMotorsports.com
Celebrating 25 years of service to the karting industry
765-339-4407
bcarlson@CarlsonMotorsports.com
 
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